Ingrain carpet fabric.



Patented May 7, l90l.

I (Application (No Model) UNITED STATES TENLE.

WILLIAM B. KEEFER, OF PHILADELPHIA, PENNSYLVANIA.

INGRAIN CARPET FABRIC.

SPECIFICATION forming part of Letters Patent N 0. 673,503, dated May 7', 1901. Application filed December 29, 1900. Serial No. 41,454. (No specimens.)

. lowing is a specification.

My invention has relation to a woven substantially one-plane ingrain carpet fabric,

and in such connection it relates to the air-- rangement of the figuring and binding warpthreads with relation to the figuring and binding weft-threads in the fabric.

The principal object of my invention is to produce a substantially one-plane ingrain carpet fabric having two acceptable faces adapted to be alternately ornamented by additional figuring warp-threads and to have the solidity and apparent thickness of the ordinary two-plane ingrain carpet, but costing much less to produce. Y My invention consists of a substantially one-plane ingrain carpet fabric having the main weft-threads bound separatelyin sheds by two binding warp-threads and having two acceptable faces, each alternate shed containing in addition to the main weft-thread a binding or a combined binding and figuring weft-thread, and both faces of the fabric being alternately ornamented by figuring warpthreads united to the face which they are designed to ornament by the additional binding or combined binding and figuring weftthreads.

The nature and scope of my invention will be more fully understood from the following description, taken in connection with the accompanying drawings, forming part hereof, in which- Figure 1 is a longitudinal sectional view of a portion of a fabric embodying main features of my invention. Figs. 2 and 3 are views similar to Fig. 1, but illustrating other efiectsin the fabric; and Fig. 4 is a view similar to Figs. 1, 2, and 3, but illustrating a modified form of fabric.

Referring to Figs. 1, 2, and 3 of the drawings, the main weft-threads a are separately arranged in sheds and bound by the comparatively thin binder warp-threads 1 and 2. Each alternate thread contains, in addition to the main weft-thread a, a binder weftthread I). The faces of the fabric thus formed are equally acceptable and are ornamented by figuring Warp-threads 3 and 4. In the fabric illustrated in the drawings these figuring warp-threads 3 and 4 are black, although it is obvious that they may, if desired, be colored, as preferred.

In the ornamentation of the'fabric the design or figures are formed on alternately the front or rear of the fabric. In the design illustrated in Fig. 1 the figuring warp-threads 3 and 4 are first used to ornament the upper face of the fabric, the figure or ornamentation extending over six weft-threads a, and then the warp-threads 3 and 4 are caused to traverse the weft-threads a and to ornament the lower face of the fabric, the figure or pattern extending under six weft-threads a. It is obvious, however, that the extent of the figure or pattern can be varied at will, providing the figuring warp-threads are properly tied to the surface which they are to ornament. Thus in Figs. 2 and 3 the two warp-threads 3 and 4 appear in alternate sheds upon the rear and face of the fabric, and hence float either under or over one weft-thread a. To thus tie the figuring warp-threads, the binder weft-threads b are introduced into alternate sheds, and in the preferred manner of binding or tying (illustrated in Fig. 1) the warp-threads 3 first pass over a weft thread a, then under a binder b in the next shed, then over three successive wefts a and the second binder b, and then under the third binder b. The warp-threads 4, however, first pass over three wefts aand the first binder b, then under the second binder b, then over the remaining wefts a in the part to be ornamented, and over the third binder b. It will thus be seen that one warpthread 3 is bound to the surface by the first and third binders I), while the warp-thread 4 is bound by the second and fourth binders b of the series. Where, as shown in Fig. 1, the wefts a to be ornamented by the threads 3 and 4 are six in number, the binders b will be three in number, and hence the Warpthread 3 will be held to one face of the fabric by two binders b, the first and third, whereas the other warp-thread 4 will be held by but one binder b, the second. However, in the next pattern or figure which is to appear on the other face of the fabric the thread 4 will be tied by two hinders bnamely, the fourth and sixth-whereas the thread 3 will be tied by but one binder I), the fifth in series. In the completed fabric therefore the figuring warp-threads 3 and 4 will both be tied by a corresponding number of binder weft-th reads b. When, however, both warp-threads 3 and 4 are to float under and over a single weftthread a, as in Figs. 2 and 3, the binder weftthread I) is inclosed between the two warpthreads 3 and 4, and one of said warp-threads 3 or 4 is inclosed between a binder weftthread I) and a weft-thread a.

In Fig. 4 the precise arrangement of the fabric hereinbefore described is illustrated, the only change or modification consisting in replacing the binder weft-threads b of Figs. 1, 2, and 3 by a series of combined binding and figuring weft-threads b.

In all the figures the main weft-threaded are colored olive, white, green, and red. In Fig. 4 the binder Weft-threads b are illustrated as colored white and red. These wefts a and b may, however, be of any other col- 01's, as desired.

Having thus described the nature and object of my invention, what I claim as new, and desire to secure by Letters Patent, is

1. A substantially one-plane ingrain carpet 3o fabric having two acceptable faces, a series of main weft-threads bound separately into sheds by two binder warp-threads, an ad-' ditional Weft-thread included in alternate sheds, and figuring warp-threads adapted to 35 ornament the faces of the fabric and to be bound to said faces by the additional weftthreads.

2. A substantially one-plane in grain carpet fabric having two acceptable faces, a series 40 of main weft-threads bound separately into sheds by two binder warp-threads, an additional figuring weft-thread included in alternate sheds, and figuring warp-threads adapted to ornament the faces of the fabric and to be 45 

